Everything seems ok, but V5 is -3,6V, not ~1,6V

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Everything seems ok, but V5 is -3,6V, not ~1,6V

Postby MarceloLoureiro » Thu Nov 16, 2017 3:11 pm

Everything seems to be ok with my oscilloscopes (I have two). I would consider it finished if I didn't have found a different voltage reading from the Assembly Guide. I find V5 (near JP9) at -3,3V or +3,5V (depending at the positions of sw1, sw2 and sw3), not "approximated 1,6V" (in both oscilloscopes). I already checked the resistors and voltages and everything else seems ok. What should I do?
MarceloLoureiro
 
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Re: Everything seems ok, but V5 is -3,6V, not ~1,6V

Postby dposea » Sun Feb 17, 2019 6:16 pm

V4 is supposed to be 1.6v I believe, If it is not R12 is probably a 10K resistor not 120. It's very hard to tell them apart by colors. I know because I messed them up myself. Once fixed I started getting a signal.
dposea
 
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